<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>评论列表</title>
  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css">
  <style>
    .badge {
      float: right;
      margin-right: 5px;
    }

    .my-page {
      margin: 0 5px;
    }

    .all-page-content {
      margin-left: 5px;
    }

    .mt15 {
      margin-top: 15px;
    }
  </style>
</head>

<body style="padding: 15px;">

  <!-- 评论面板 -->
  <div class="panel panel-primary">
    <div class="panel-heading">
      <h3 class="panel-title">发表评论</h3>
    </div>
    <form class="panel-body cmt-form">
      <div>评论人：</div>
      <input type="text" class="form-control" name="username" autocomplete="off" />
      <div>评论内容：</div>
      <textarea class="form-control" name="content"></textarea>
      <button type="submit" class="btn btn-primary submit">发表评论</button>
    </form>
  </div>


  <!-- 评论列表 -->
  <ul class="mt15 list-group">
    <!-- <li class="list-group-item">
       <span>评论内容</span>
       <span class="badge del" style="cursor:pointer; background-color: lightgray;">删除</span> 
       <span class="badge" style="background-color: #F0AD4E;">评论时间：xxx</span>
       <span class="badge" style="background-color: #5BC0DE;">评论人：xxx</span>
    </li> -->
  </ul>

  <!-- 分页器 -->
  <nav class="mt15">
    <ul class="pagination">
      <li>
        <button class="last">
          <span>&laquo;</span>
        </button>
      </li>
      <li class="my-page">
        <span class="page-show"></span>
      </li>
      <li>
        <button class="next">
          <span>&raquo;</span>
        </button>
      </li>
      <li class="all-page-content">
        <span>共计:<span class="all-page"></span>页</span>
      </li>
    </ul>
  </nav>
  <script src="./lib/axios.js"></script>
  <script src="./lib/form-serialize.js"></script>
  <script>
    let allPage = 0
    let myPage = 1
    // 获取数据
    async function getdata() {
      const { data: res } = await axios({
        url: 'https://hmajax.itheima.net/api/cmtlist',
        params: {
          page: myPage
        }
      })
      console.log(res)
      // 总页数等于res里面的总页数
      allPage = res.allPage
      // 渲染到页面中
      document.querySelector('.all-page').innerHTML = allPage

      const reslist = res.data.map((item, index) => `
          <li class="list-group-item">
            <span>${item.content}</span>
            <span class="badge del" style="cursor:pointer; background-color: lightgray;" data-id = ${item.id}>删除</span> 
            <span class="badge" style="background-color: #F0AD4E;">评论时间：${item.time}</span>
            <span class="badge" style="background-color: #5BC0DE;">评论人：${item.username}</span>
          </li>
      `)

      document.querySelector('.list-group').innerHTML = reslist.join('')
      document.querySelector('.page-show').innerHTML = myPage
      
    }

    document.querySelector('.last').addEventListener('click', function () {
      if (myPage > 1) {
        myPage--
        getdata()
      }
    })

    document.querySelector('.next').addEventListener('click', function () {
      if (myPage < allPage) {
        myPage++
        getdata()
      }
    })

    // 新增功能
    document.querySelector('.submit').addEventListener('click', async function (e) {
      e.preventDefault()
      const form = document.querySelector('.panel-body.cmt-form')
      const formdata = serialize(form, { hash: true, empty: true })
      console.log(formdata)
      let res = await axios({
        url: 'https://hmajax.itheima.net/api/addcmt',
        method: 'POST',
        data: formdata
      })
      console.log(res)
      getdata()
      form.reset()
    })

    // 删除功能
    const deletes = document.querySelector('.mt15.list-group')
    deletes.addEventListener('click', async function (e) {
      if (e.target.classList.contains('del')) {
        const id = e.target.dataset.id
        console.log(id)
        let {data:res} = await axios({
          url: 'https://hmajax.itheima.net/api/delcmt/?id=' +id 
        })
        allPage = res.allPage
        if(myPage>allPage){
          myPage = allPage
        }
        getdata()
      }
    })

    



    getdata()
  </script>
</body>

</html>